Power system performance is affected by dynamic characteristics of hydraulic governor-turbines during and following any disturbance, such as occurrence of a fault, loss of a transmission line or a rapid change of load. Accurate modelling of hydraulic System is essential to characterize and diagnose the system response. In this article the mathematical modeling of hydraulic turbine is presented. The model is capable to implement the digital systems for monitoring and control replacing the... Topics: mathematical modeling, simulation, hydraulic turbine
The purpose of this paper is to study and compare the brand personality of Nokia and Samsung in Chinese situation for brand building reference. This paper investigated Nokia and Samsung brand personality. Results demonstrated that Nokia brand personality has four dimensions (Sureness, Reliability, Agility, Peacefulness), and Samsung has three dimensions (Competence, Sophistication, Agility). The absence of Ruggedness supports the implication of many studies that Ruggedness is a culture-specific... Topics: Brand Personality, Brand building, Factors, Mathematical Modeling
Unconventional machining process finds a lot of application in aerospace and precision industries. It is preferred over other conventional methods because of the advent of composite and high strength to weight ratio materials, complex parts and also because of its high accuracy and precision. Usually in unconventional machine tools, trial and error method is used to fix the values of process parameters. In the proposed work an algorithm which is developed using Artificial Neural Network (ANN)... Topics: Algorithm, Unconventional machining processes, mathematical modeling, Artificial Neural Network.
byRohini Priya (Final year student) Department of Electrical Engineering Aryabhatta Institute of Engineering & Management, Panagarh, Durgapur, India Email:email@example.com
Abstract This paper presents the generalized mathematical modeling of permanent magnet dc generator using state space approach. Transfer function of the generator is derived with the help of derived state model. The performance of PMDC generator under various conditions is simulated using MATLAB/SIMULINK environment and simulation result demonstrates the feasibility of the proposed system. A proportional controller is used to get better response from the designed system in MATLAB... Topics: state space, PMDC generator, mathematical modeling, MATLAB/SIMULINK
byDebabrata Pal,Aksum University, College of Engineering and Technology Department of Electrical and Computer Engineering Ethiopia, NE Africa Email:firstname.lastname@example.org
Abstract This paper deals with the mathematical modeling of a dc motor and quadratic optimal regulator system. MATLAB based program is used to design the quadratic optimal regulator system for the dc motor. Topics: dc motor, quadratic optimal regulator, mathematical modeling, MATLAB.
The theoretical model of the steady state concentration and flux in immobilized glucose isomerase is discussed. This model is based on diffusion equation containing a non-linear term related to Michaelis-Menten kinetics of the enzymatic reaction. An analytical expression pertaining to the concentration and flux are obtained using the New Homotopy approach for all values of the dimensionless parameters (Thiele modulus) and (kinetic parameter). Furthermore, in this work the numerical simulation... Topics: Glucose Isomerase, Mathematical Modeling, Reaction Diffusion Equation, Packed Bed, New Homotopy...
In this work we study the dynamic behaviour of compound shells of revolution partially filled with an ideal incompressible fluid based on boundary-value problems. New analytical mathematical model with corresponding discrete scheme for the elastic displacements and the dynamic liquid pressure is developed. Topics: mathematical modeling, hydroelastic vibration, boundary-value problem, singular integral equation,...
Mathematical modeling for removal of Phenol using fluidized bed adsorption from the wastewater has been presented in this work. Present experimental study deals with effect of initial concentration of phenol and particle size on the rate of adsorption. The fluid and solid phase mass transfer coefficient at various mass of phenol in the solvent per unit mass of adsorbent were found in well agreement with well known mathematical models. It is observed that the fluid phase and solid phase mass... Topics: Fluidized bed adsorption, Mathematical modeling, mass transfer coefficient, particle size as
The system of non linear reaction‐diffusion process in thin membrane describing steady state of chemical reactions that involves three species is discussed. The equations are coupled by the non‐linear reaction terms with mixed boundary conditions. A closed form of an analytical expression of concentrations for the full range of enzyme activities has been derived using Homotopy analysis method. A simple form of an approximate analytical expression of concentrations in terms of dimensionless... Topics: Non‐Llinear Reaction‐Diffusion Equations, Enzyme Mathematical Modeling, Thin Membrane, Homotopy...
In this research article, we discuss the non-steady state concentration of mediator of electrochemical induction in chemical reactions. This paper presents an approximate analytical method (Homotopy and new approach to the Homotopy perturbation method) to solve the nonlinear differential equations. A simple and closed form of an analytical expression of non-steady state concentrations and effectiveness factors of current is pertaining for all values of the dimensionless parameters. The... Topics: Mediated Concentration, Current, Mathematical Modeling, Initial-boundary Value Problem, Numerical...
This paper proposes application of BAT algorithm for solving economic load dispatch problem. BAT algorithmic rule is predicated on the localization characteristics of micro bats. The proposed approach has been examined and tested with the numerical results of economic load dispatch problems with three and five generating units with valve - point loading without considering prohibited operating zones and ramp rate limits. The results of the projected BAT formula are compared with that of other... Topics: Binary BAT algorithm, Economic load dispatch, valve-point effect, mathematical modeling
byLuenberger, David G., author; Ye, Yinyu, author; SpringerLink (Online service)
Linear and Nonlinear Programming Author: David G. Luenberger, Yinyu Ye Published by Springer International Publishing ISBN: 978-3-319-18841-6 DOI: 10.1007/978-3-319-18842-3 Table of Contents: Introduction Basic Properties of Linear Programs The Simplex Method Duality and Complementarity Interior-Point Methods Conic Linear Programming Basic Properties of Solutions and Algorithms Basic Descent Methods Conjugate Direction Methods Quasi-Newton Methods Constrained Minimization Conditions Primal... Topics: Economics, Engineering economy, Operations research, Economics/Management Science, Operation...
Weather and climate systems have low dimensional attractors. A consistent feature of weather and climate data is that they are aperiodic and their deviations from periodicity cannot be explained by conventional linear models of time series analysis. It is therefore essential that the nature of the sea level change is analyzed and modelled in order to assess the changes from one coastline to other or from the changes taking place in one ocean from the other neighboring oceans. In this study the... Topics: DTIC Archive, Indira, N. K., CENTRE FOR MATHEMATICAL MODELING AND COMPUTER SIMULATION BANGALORE...
Linear Programming: Foundations and Extensions Author: Robert J. Vanderbei Published by Springer US ISBN: 978-1-4757-5664-7 DOI: 10.1007/978-1-4757-5662-3 Table of Contents: Introduction The Simplex Method Degeneracy Efficiency of the Simplex Method Duality Theory The Simplex Method in Matrix Notation Sensitivity and Parametric Analyses Implementation Issues Problems in General Form Convex Analysis Game Theory Regression Network Flow Problems Applications Structural Optimization The Central... Topics: Mathematics, Computer science, Mathematical optimization, Operations research, Operations Research,...
This report deals with problems of transport properties in gas dynamic flows at high pressures and densities and, in particular, with transport properties of Hydrogen, Nitrogen, Water and Oxygen. The behavior of these substances at high pressures and/or low temperatures is quite different from perfect gas behavior. Especially near its critical points or lines of phase changes, thermodynamic properties, equations of state and transport properties as well exhibit proper characters while the... Topics: DTIC Archive, Sokolova, I. A., Slavinskaya, N. A., Haidn, O. J., RUSSIAN ACADEMY OF SCIENCES MOSCOW...